Custom fields may be enabled in the following modules:

Custom fields may be enabled in Control panel->any of the mentioned above modules->Module settings->Fields of a new entry form

Custom field is enabled, when the first box(not mandatory field) or both boxes (mandatory field) are checked. Do not forget to click Save at the bottom of the page.

Both standard and custom fields of a new entry form may be re-named. It can be done via Substitution of default phrases.

To embed the enabled custom filed into the templates of Page with entry full text and its comments or Entry adding/editing page, use this code:

$OTHER1$

Note: Custom fields as well as the code have numeration. It means that if Custom field 1 is enabled, its code is going to be $OTHER1$. And if Custom field 2 - $OTHER2$ etc